Supplementary mechanism that provides a temperature rise and fall effect to a machine tool spindle

Abstract

A supplementary mechanism that provides a temperature rise and fall effect to a machine tool spindle is mainly used to connect to pipelines between a machine tool spindle and a cooling device. The present invention provides an additional heating function to the spindle of the machine tool that originally has a cooling device, and still retains its original cooling function. The supplementary mechanism can provide the effect of raising and lowering the temperature. When cooling, the liquid provided by the cooling device is passed to directly cool the machine tool spindle. When raising the temperature, the flow path is switched, so that the liquid of the cooling device cannot flow to the machine tool spindle, and the liquid flowing out of the machine tool spindle forms an independent circulation channel, and the supplementary mechanism heats the liquid in the independent circulation channel, achieving the effect of rapid heating.

What is claimed is: 
     
       1. A supplementary mechanism that provides a temperature rise and fall effect to a machine tool spindle, mainly used to connect to pipelines between a machine tool spindle and a cooling device, said supplementary mechanism comprising:
 a cold liquid shortcut channel; 
 a cold liquid electrical control valve connected to one end of said cold liquid shortcut channel for the liquid of said cooling device to enter; 
 a return valve connected to an opposite end of said cold liquid shortcut channel for the liquid to flow out to said cooling device; 
 a hot liquid shortcut channel; 
 a hot liquid electrical control valve connected to one end of said hot liquid shortcut channel and also connected to said return valve; 
 a discharge valve connected to one end of said hot liquid shortcut channel and also connected to said cold liquid electrical control valve; 
 a liquid outlet channel having one end thereof connected to said discharge valve and an opposite end thereof provided for a liquid to flow out to said machine tool spindle; 
 a reflux liquid inlet channel having one end thereof connected to said hot liquid electrical control valve and an opposite end thereof provided for the liquid returning from said machine tool spindle to enter; and 
 a pump installed on one of said hot liquid shortcut channel, said reflux liquid inlet channel and said liquid outlet channel and controlled by a control source to drive the liquid therein to move; 
 wherein said discharge valve is to ensure that the liquid flowing through only flows to said liquid outlet channel, said return valve is to ensure that the liquid flowing through only flows to said cooling device; 
 wherein said control source controls said cold liquid electrical control valve and said hot liquid electrical control valve to switch the liquid flow direction; when said control source controls said cold liquid electrical control valve so that the liquid flowing from said cooling device can only flow to said discharge valve, said control source also controls said hot liquid electrical control valve so that the liquid flowing from said reflux liquid inlet channel can only flow to said return valve; when said control source controls said cold liquid electrical control valve so that the liquid flowing from said cooling device can only flow to said cold liquid shortcut channel, said control source also controls said hot liquid electrical control valve so that the liquid flowing from said reflux liquid inlet channel can only flow to said hot liquid shortcut channel. 
 
     
     
       2. The supplementary mechanism as claimed in  claim 1 , further comprising a liquid inlet channel and a reflux liquid release channel, said liquid inlet channel is connected with one end thereof to said cold liquid electrical control valve for enabling the liquid of said cooling device to flow first into said liquid inlet channel and then into said cold liquid electrical control valve; said reflux liquid release channel is connected with one end thereof to said return valve so that the liquid flowing from said return valve flows first into said reflux liquid release channel and then into said cooling device. 
     
     
       3. The supplementary mechanism as claimed in  claim 1 , further comprising a heater and a temperature sensor, said heater being installed on one of said liquid outlet channel, said hot liquid shortcut channel and said reflux liquid inlet channel and controlled by said control source to provide a heating effect; said temperature sensor being installed on said reflux liquid inlet channel and electrically connected to said control source. 
     
     
       4. The supplementary mechanism as claimed in  claim 1 , wherein said control source is a microcomputer electrically connected to said cold liquid electrical control valve, said hot liquid electrical control valve and said pump. 
     
     
       5. The supplementary mechanism as claimed in  claim 1 , wherein said control source is an external control box electrically connected to said cold liquid electrical control valve, said hot liquid electrical control valve and said pump. 
     
     
       6. The supplementary mechanism as claimed in  claim 1 , wherein said cold liquid electrical control valve and said hot liquid electrical control valve are three-way solenoid valves. 
     
     
       7. The supplementary mechanism as claimed in  claim 1 , wherein said discharge valve and said return valve are three-way check valves. 
     
     
       8. The supplementary mechanism as claimed in  claim 1 , wherein said discharge valve and said return valve are three-way solenoid valves electrically connected to said control source. 
     
     
       9. The supplementary mechanism as claimed in  claim 1 , wherein said cold liquid shortcut channel and said hot liquid shortcut channel are respectively equipped with a flow sensor, and each said flow sensor is electrically connected to said control source.